1 /*
2 * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
18 * USA
19 *
20 */
21
22 #include "config.h"
23 #include "DateInstance.h"
24
25 #include "JSGlobalObject.h"
26
27 #include <math.h>
28 #include <wtf/DateMath.h>
29 #include <wtf/MathExtras.h>
30
31 using namespace WTF;
32
33 namespace JSC {
34
35 const ClassInfo DateInstance::info = {"Date", 0, 0, 0};
36
DateInstance(ExecState * exec,NonNullPassRefPtr<Structure> structure)37 DateInstance::DateInstance(ExecState* exec, NonNullPassRefPtr<Structure> structure)
38 : JSWrapperObject(structure)
39 {
40 setInternalValue(jsNaN(exec));
41 }
42
DateInstance(ExecState * exec,NonNullPassRefPtr<Structure> structure,double time)43 DateInstance::DateInstance(ExecState* exec, NonNullPassRefPtr<Structure> structure, double time)
44 : JSWrapperObject(structure)
45 {
46 setInternalValue(jsNumber(exec, timeClip(time)));
47 }
48
DateInstance(ExecState * exec,double time)49 DateInstance::DateInstance(ExecState* exec, double time)
50 : JSWrapperObject(exec->lexicalGlobalObject()->dateStructure())
51 {
52 setInternalValue(jsNumber(exec, timeClip(time)));
53 }
54
calculateGregorianDateTime(ExecState * exec) const55 const GregorianDateTime* DateInstance::calculateGregorianDateTime(ExecState* exec) const
56 {
57 double milli = internalNumber();
58 if (isnan(milli))
59 return 0;
60
61 if (!m_data)
62 m_data = exec->globalData().dateInstanceCache.add(milli);
63
64 if (m_data->m_gregorianDateTimeCachedForMS != milli) {
65 msToGregorianDateTime(exec, milli, false, m_data->m_cachedGregorianDateTime);
66 m_data->m_gregorianDateTimeCachedForMS = milli;
67 }
68 return &m_data->m_cachedGregorianDateTime;
69 }
70
calculateGregorianDateTimeUTC(ExecState * exec) const71 const GregorianDateTime* DateInstance::calculateGregorianDateTimeUTC(ExecState* exec) const
72 {
73 double milli = internalNumber();
74 if (isnan(milli))
75 return 0;
76
77 if (!m_data)
78 m_data = exec->globalData().dateInstanceCache.add(milli);
79
80 if (m_data->m_gregorianDateTimeUTCCachedForMS != milli) {
81 msToGregorianDateTime(exec, milli, true, m_data->m_cachedGregorianDateTimeUTC);
82 m_data->m_gregorianDateTimeUTCCachedForMS = milli;
83 }
84 return &m_data->m_cachedGregorianDateTimeUTC;
85 }
86
87 } // namespace JSC
88